One of the top choices to pair with crayfish is the brown pencilfish. This tiny fish often hovers near the top of the tank. Their appearance is quite unique, with a sleek, thin, and elongated body.

Scientists have discovered a new species of colorful crayfish hiding in plain sight as a popular aquarium pet for over two decades, stated Popular Science. The new species, named Cherax ...

“Given its size, it could eat native fish and crayfish, making it a top predator ... species is often linked to human activity. Aquarium dumping, a common practice in which pet owners ...